Electric Motor(Dji)

ELECTRIC MOTOR (DJI)

Brushless motors take the aircraft into the sky and keep cameras level. They are fast, powerful, agile, highly efficient and extremely reliable, making them ideal for everyday use. The way they are made and how they interact with everything from props to the airframe can have a huge impact on the way an aircraft moves through the air.

A brushless motor has in its center an assembly of silicon-steel sheets and windings, known as coils. This core does not spin, so it is called a ‘Stator’. Surrounding the stator is an assembly called a ‘Rotor’ which contains a magnet yoke and a circle of permanent magnets. In a single-phase motor, when electricity is fed into the stator, a magnetic field that attracts and repels the magnets in the rotor causing it to spin through 180 degrees, is created. To keep it spinning, the poles of the electromagnet are switched every 180 degrees. This is how the force that powers the motor’s motion is created. Typically, the motor found on a drone is triple-phase, but this basic principle remains the same.

The technology behind brushless motors is simple, but there are many ways that they can be refined and shaped to give pilots a better flying experience. DJI designs and manufactures all of its motors in-house and tunes them so that each motor is optimized for the aircraft it is paired with, from the Phantom 4 to the M600.